Abstract: Higher expression of somatostatin receptor (SSTR) on the surface of cells of the neuroendocrine tumor and some nonneuroendocrine tumor. Somatostatin analogues, such as octreotide, which holding a long time of action, high affinity with SSTR, and can be labeled by radionuclides and used in SSTR tumor scintigraphy. This is an interesting and important methods for evaluating the diagnosis, stage and prognosis of tumor. So it is a valuable supplemental tool to tumor diagnosis in routine imageological examination.